Hi! I see you're having trouble playing video clips on the Yahoo Sports app using your WebKit browser on Windows 10. I’d love to help you get that sorted out.

To start, can you tell me if the video clips fail to load entirely, or do you see any error messages when you try to play them? Also, have you tried playing videos on any other browser or device to check if the issue is specifically with this setup?

In the meantime, here are some initial steps we can take to troubleshoot:

1. Clear Your Browser Cache and Cookies:
- Sometimes stored data can interfere with video playback. Go to your browser settings and clear cache and cookies. Then restart the browser and try again.

2. Update Your Browser:
- Ensure your WebKit browser is updated to the latest version since older versions can have compatibility problems with video playback.

3. Disable Browser Extensions:
- Some extensions, especially ad blockers or script blockers, can stop videos from loading. Try disabling them temporarily to see if that helps.

4. Check Your Internet Connection:
- Streaming videos require a stable connection. Try running a speed test or switching networks if possible.

5. Enable JavaScript and Cookies:
- Videos usually require JavaScript to be enabled in your browser settings, so double-check this.

If you’ve done the above, let me know, and we can dive into more advanced steps like checking for system updates, browser-specific video settings, or potential conflicts with security software.

Would you like me to guide you through clearing your browser cache and cookies first?